Both the injured have been admitted in the burn ward at Safdurjung Hospital. The woman, who has been identified as Preetama, has received 80 per cent burns while her son Rama received 70 per cent burns.
Two fire tenders rushed to the spot, near the Municipal Corporation of Delhi School in Dwarka's Sector 19 after a call was received at 11:55 am, they said.
In an another incident, a fire broke out in the parking lot of AIIMS hospital here. The cause of the fire is not known.